Refrigeration compressors
HOWDEN Screwcompressors:
Howden Compressor LTD produces only screw compressor blocks in two versions for the Refrigeration industry : The WRV and XRV models
Basic Howden compressors LTD is delivering only bear shaft compressor builders of units , except Petro-chemical. Petro-chemical of special products /units are often produced by Howden Process .
The oldest compressor line of Howden. The WRV are suited with journal bearings and thrust bearings . The model number hold all information , for instance MK4/WRV255/130.50.789 indicate : standard compressor : Generation 4 – model range WRV- 25,5 cm rotordiameter- 1,3 x 25,50 indicates the working lengh of the rotors- 5.0 indicate the volume ratio.
The Howden XRV models are the 100% roller bearing compressors. As the radials and Thrust bearings are roller bearings . The XRV models are available as Manual VI ( MVI ) and Auto Vi ( AVI). Based on the type shield indicaton we find the following information , for instance if the Type Shield shows: MK4/XRV204/165mvi/ 789. We find a rotor diameter of 20,4 – the working length of the rotor is 20,4 x 1,65 , the vi is adjustable from 2,1 to 5.0.
STALL compressors units & compressor blocks
Stall compressor was very old compressorbrand – as Producer of piston and screw compressors – well-known are the strong S-versions based on S57-S71- S73 are the most known – there was a line from S51 till S73 . Compact compressor units R-range , S24/S26 and the pistons UD range
The SV-range of Stall was a real industrial Heavy duty Industrial Compressor – The range was based journal bearings ( radial) and Thrust bearings ( axial) . We find several VI indication behind the model for number, for instance SVA71-26 Model SV71 and the VI=2.6.
We can also notice the Indicaton SVA – SVB – the B indicate a Booster- first stage compressor- basic this telling more of the unit as the compressor – in the most cases the oil cooler and E-motor are much smaller.
Interesting detail is the building oil pump direct on the compressor block
Stall was the Developers of the compact screw compressor. the R51-R53-R55-R57-R57 models – Basic all the same compressor with only the difference : the gear wheels ratio. Unique of the R-range was the vertical way of building and the cyclone oil separator. Due to the small foot print very interesting.
The latest model before Stall went up in the concern as we know today as JCI there was a interesting model the S24 and S26. As so developed on the same design as the R-range only without the Gearwheels . The S24 and S26 are also compact compressors and very suitable for VSD .
Sometimes you find a Stall UD range running – strong simple but a keep going compressor .
GRASSO/ GEA/KAB Compressor units & compressor blocks:
GEA Berlin finds the history in the KAB factory ( Kühl Automat Berlin) , which produced screw compressors Units and chillers – The Dutch Grasso produces only Piston compressor – except the unique Grasso MS ( mono screw ) and the transformed Sullair models . Sometimes you can find a Howden compressor WRV as under the Grasso type shield.
Today GEA produced a wide range on Screw compressors starting by the C till Z – From the P and higher all Compressor are heavy Industrial with journal bearings and thrust bearings . The Range C to,, M are 100% roller bearing compressors. Today the semi-hermetic versions for NH3 are also available.
The KAB range was indicated with S2 and S3 followed by 450, 900 of 2500. All journal bearing and thrust bearing compressors.
The Dutch Grasso is well known piston compressor – start was the K110 range- still today produced in India by Kirloskar based on a old licence – the RC 11 was the next line , the RC12 had small improvements to fit the VSD time – this started with the RC12E. and today a complete redesign the V -range on the big piston side.
Smaller we find the RC 6 -range – RC7/8 and RC 9 – later the RC10 .
All quality compressors – and If you are a real good car engine mechanic in the 80 you can handle all Grasso products.
type a 1 stage with for instance the type ; RC 4211 indicates 4 cylinders low stage – 2 cylinders high stage
The Grasso MS was a Mono Screw like we know today from JE&H only with a big difference : The Star wheel are not from Composite material but steel . Grasso produced this model fron mid 80 till mid 90 . A special version was the MS 1022M Anti magnetic used on minesweepers. Grasso stopt with support – still RM-Support delivers Shaft seal on request in the Heat reducing version of the Coldores shaft seal ( only on special order) . Orginal the MS1022M was for R22 designed – change on other type of refrigerant has a impact on the shaft seal
For the Merge with KAB /GEA the Dutch Grasso was alos active in screw compressor , they used the Howden WRV and the Sollair compressor blocks. If you have a GSL with a E-motor for partload you have a Sullair compressor. if you noticed the serial number in the same line as we described by the Howden WRV – you have a Howden compressor block .
SABROE Compressor units and Compressors :
A manufacturer which produce as Screw – as Piston compressor is Sabroe. Well-known over the complete world. All most in every field the are Sabroe compressors. Well known are the SAB 128 and Sab163 and the complete VMY range. On the piston side we remember all the SMC( ons stage) and TSMS ( two stage)
The SAB 128 -SAB 163 are 100% roller bearing compressors . The oldest is the mk1 – These compressor were suited with the Suction at 12 O’ clock. The MK1 and MK2 ( is suited with the suction on the side) have rotors of the same size – the compressor can be modified in to male of female drive versions .
The mk3 and Mk4 are design as male of Female at the factory
The SAB 202 and VMY range are journal bearing compressors strong Industrial. Today the range of Sabroe is very large – for each application is there a suitable solution
The SMC and TSMC are the most known . Today there are HPO /HPC for CO2 in different sizes . Very rare you find the old 1800 models running 750 rpm and have the liver forever – spare are a bit more complicated – sometimes we find complete compressors in perfect condition
Mycom Compressors Units and Compressor blocks
Mycom manufactured very long screw and piston compressors – the fist screws were the LUD models – later V-range – most interesting compressor models are the compound compressors . The piston range is strong and build for life
The LUD and V range are journal bearing and thrust bearing compressors. Industrial build.
The L160 an the latest model I are 100% roller bearings. Unique on L160 is the position of the slide valve ,which is on the side of the compressor.
The first compressor , where to rotorsets low stage and high stage is build together to one compressor . great design
Mycom has a range of Piston compressor which run for ever – strong and stable.
Aerzener Compressor Units and compressor Blocks
Aerzener Machine Fabrik is basic not big known- an every one worked and know their products – the VMY 236 – VMY336- VMY436 -are familiar – Sabroe units – many years Sabroe used teh Aerzener products on their units .
The VMY range are journal bearing and thrust bearing compressors- heavy duty – logical Aerzen is well know in heavy industry like (gas) blowers. All parts are sill available.
The VMY -56 the newer models still journal bearing compressor and thrust bearings. interesting detail the oil pump is direct driven by the compressor